My HGLC F4 V5 PRO died after first flight and will not power up using USB

eddie613

eddie613

New Member
I recently built a drone using the HGLC F4 V5 PRO, got everything working, and flew it for about a minute. I landed it hard enough to flip over but not hard enough to break anything. After the landing it became completely unresponsive. I have taken it apart and attempted to reconnect to Betaflight to see if I could fix it, but when I plug in the USB there is no response from the fc or my computer. Also if I plug in the battery I get a solid blue led. Is there a fix or is it toast?
 
Blue led is power I think. You may have bust the USB socket. The only way to know for sure now is through a uart with an ftdi chip or maybe a Arduino nano.
Just don't forget to connect Tx to rx & RX to Tx. This is the only other way to access the flight program. Sorry. But it does look like you killed it. $40 down the WC.
 
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It should obviously last longer than it did but that's the problem with AIO boards if things start breaking then the whole thing is kuput. It may have been a case where a solder joint came loose & shorted something. Have you got a servo tester to see if the ESC are OK as well.
 
All the solder joints were fine it was more of a quick landing on a hill, not nearly hard enough to kill anything, but the grass was wet. The motors still make slight movement when I plug them in with the lipo. Also the board chirps the first half of the checkout when I plug in to the battery. I am very new to all this, but from what I've seen this is just a bad board (the boot button also fell apart so even if I could reboot this thing I wouldn't be able to put it in bootloader mode anyway).
 
The button is only a contact. Still possible to use. Wet grass can cause shorts. Let it dry out properly. Like a few days, Try again. If not, unsolder the board free.
Try it on its own. That way your ready for a new board. If you intend to fly in wet conditions I can recommend conformal coating for the fcb. I Have a totally waterproofed 130. Esc's motors fcb rx vtx & camera. But I still not gonna fly over a lake. In fact just as careful as if it wasn't. It's the only one I will fly in this weather.
 
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